Ultramarine Blue is the warm, luminous blue in our Stone watercolor line.
As the warm half of our balanced blue pair, Ultramarine Blue mixes with Phthalo Blue to create a clear, vibrant True Blue—a foundational warm–cool exercise for early‑grade watercolor work and color exploration.
Teachers often choose Ultramarine Blue as the primary classroom blue because it creates luminous washes and mixes clean, lively greens with Lemon Yellow. Its warm tone supports expressive transitions, seasonal color stories, and structured main lesson painting.
Produced in the USA using high‑quality pigments and a clean, reliable liquid base, Stone Watercolor Paint is designed specifically for Waldorf watercolor painting. The formula is extremely concentrated, allowing teachers and students to adjust the strength of the color with simple dilution. For general painting, we recommend 10 parts water to 1 part paint. For veil painting, use more water and allow layers to dry between washes. For richer, more vibrant color, simply reduce the amount of water.
Ultramarine Blue offers smooth transparency, excellent flow, and a warm, glowing character across all watercolor techniques used in Waldorf classrooms. Its warmth supports expressive greens, balanced blues, and gentle early‑grade work while remaining versatile enough for more advanced painting.
Color Mixing with Ultramarine Blue
- Ultramarine Blue + Phthalo Blue — Creates a clear, vibrant True Blue.
- Ultramarine Blue + Prussian Blue — Creates deep cool blues and strong evening shadow tones.
- Ultramarine Blue + Lemon Yellow — Produces lively, warm greens and soft blue‑green transitions.
- Ultramarine Blue + Golden Yellow — Creates natural greens and warm yellow‑green tones.
- Ultramarine Blue + Vermillion — Produces expressive purples and warm violet transitions.
- Ultramarine Blue + Carmine Red — Creates warm purples and deep rose‑violet hues.
- Ultramarine Blue + Red Rose — Produces soft, cool purples and gentle violet tones.
- Ultramarine Blue + True Red — Creates warm purples and balanced violet hues.
- Ultramarine Blue + Viridian Green — Deepens greens into natural blue‑green tones.
- Ultramarine Blue + Black Gouache — Creates deep navy blues and muted shadow tones.
- Ultramarine Blue + White Gouache — Soft sky blues and gentle pastel tints.
Non‑Toxic – Conforms to ASTM D‑4236.
Sizes
Ultramarine Blue — 1 oz (28.4 ml) SUB1 — $9.95
Ultramarine Blue — 4 oz (113.6 ml) SUB4 — $27.95
Ultramarine Blue — 8 oz (227.3 ml) SUB8 — $45.95
